What would happen at the output of a fullwave bridge rectifi

What would happen at the output of a full-wave bridge rectifier circuit if one of the diodes in the bridge opened? The ripple frequency would decrease, and the voltage would decrease. The ripple frequency would increase, and the voltage would decrease. The ripple frequency would remain the same, and the voltage would decrease. The ripple frequency would remain the same, and the voltage would increase. Look at the amplifier circuit shown above. Which of the following statements about this circuit is correct? This is a common-emitter circuit that\'s characterized by a high input impedance and a low output impedance. This is a common-emitter circuit that\'s characterized by a low input impedance and a high output impedance. This is a common-collector circuit that\'s characterized by a high input impedance and a low output impedance. This is a common-collector circuit that\'s characterized by a low input impedance and a high output impedance. Look at the circuit diagram shown in the figure above. When R_1 and R_2 are equally illuminated, the lamp I_1 glows dimly. Which of the following will happen if R_2 is covered so that no light can reach it? Lamp I_1 glows brighter, because the forward bias on Q_1 is decreased. Lamp I_1 goes out, because the forward bias on Q_1 increases. Lamp I_1 glows brighter, because the voltage on the base of Q_1 goes positive. Lamp I_1 goes out, because the forward bias on Q_1 is decreased. A modulation technique that\'s used in fiber-optic transmission in which the width of pulses is varied in accordance with the modulation signal is called PPM. PAM. PRM. PWM.

Solution

1. A The ripple frequency would decrease and voltage would decrease.

An open diode in a full-wave bridge rectifier will produce the same results as in the center-tapped circuit. The open diode prevents current through the load resistor duri ng half of the input voltage cycle. The result is half-wave rectification, which produces double the ripple voltage at 60 Hz.

2. A This is a Common Emitter Circuit that is Characterized by high input impedance and low output impedance.

3. C  Lamp I1 glows brighter,because the voltage on base of Q1 goes positive.

4. D PWM ,Pulse Width Modulation, here width of the pulse is varied in accordance with the modulation signal